From 82d2e03c1e709217c4a11d179ad9b1a7ff4dce71 Mon Sep 17 00:00:00 2001 From: Leyi Rong Date: Thu, 12 Nov 2020 13:51:54 +0800 Subject: [PATCH] net/avf: fix performance drop after port reset [ upstream commit 63b7be7870c1eef53808f796f815b9b34ba36325 ] Needs to reset rxq->rxrearm_start to 0 when reset_rx_queue(), otherwise, the random value of rxrearm_start will cause performance drop due to L3 contested accesses. Fixes: 69dd4c3d0898 ("net/avf: enable queue and device") Signed-off-by: Leyi Rong Acked-by: Qi Zhang --- drivers/net/avf/avf_rxtx.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/avf/avf_rxtx.c b/drivers/net/avf/avf_rxtx.c index 33670fdb1c..79ab94513c 100644 --- a/drivers/net/avf/avf_rxtx.c +++ b/drivers/net/avf/avf_rxtx.c @@ -170,6 +170,7 @@ reset_rx_queue(struct avf_rx_queue *rxq) rxq->pkt_first_seg = NULL; rxq->pkt_last_seg = NULL; rxq->rxrearm_nb = 0; + rxq->rxrearm_start = 0; } static inline void